GeForce GT 430 vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which comes with GPU core speed of 750 MHz, and 512 MB of GDDR4/GDDR3/DDR3/DDR2 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
Radeon HD 4670 512MB		70 Watts
	Difference: 10 Watts (17%)

Memory Bandwidth

Performance-wise, the Radeon HD 4670 512MB should theoretically be a bit better than the GeForce GT 430 in general. (explain)

Radeon HD 4670 512MB		32000 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The Radeon HD 4670 512MB should be quite a bit (more or less 114%) more effective at AF than the GeForce GT 430. (explain)

Radeon HD 4670 512MB		24000 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 12800 (114%)

Pixel Rate

The Radeon HD 4670 512MB is a lot (approximately 114%) better at full screen anti-aliasing than the GeForce GT 430, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 4670 512MB		6000 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 3200 (114%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.